This information is provided for educational purposes only and should not be considered legal advice. Employment decisions depend on numerous factors including applicable federal and state law, industry regulations, job duties, employer policies, contractual obligations, and the facts of each situation. Employers should consult qualified employment counsel before making workplace policy or disciplinary decisions.
Castellan Health Occupational Medicine Team
Occupational health and employer services review
Updated and last reviewed: July 2026. Designed for Florida and West Central Florida employers, including Tampa, Brandon, Riverview, Plant City, St Petersburg, Clearwater, Largo, Pinellas County, Hillsborough County, and Pasco County.
Short Answer for Employers
DOT-regulated employees cannot rely on a state medical-marijuana card to avoid federal marijuana rules; DOT testing and return-to-duty processes must be handled separately from non-DOT programs.
What This Means
DOT Marijuana Rules is an employer workflow topic involving workplace policy, occupational-health coordination, testing procedures, documentation, confidentiality, and legal review for Florida employers.
What Employers Should Remember
- DOT-regulated employees cannot rely on a state medical-marijuana card to avoid federal marijuana rules; DOT testing and return-to-duty processes must be handled separately from non-DOT programs.
- Employers should distinguish DOT and non-DOT requirements before ordering tests or making decisions.
- Written policy, consistent documentation, MRO review where applicable, and qualified legal review reduce avoidable risk.
DOT vs Non-DOT Marijuana Testing
| Category | DOT-regulated testing | Non-DOT employer testing |
|---|---|---|
| Rule source | Federal DOT agency requirements. | Employer policy, state law, contracts, and industry practice. |
| Medical marijuana | State card does not override DOT rules. | Requires policy and legal review. |
| Documentation | DOT forms, MRO process, and regulated return-to-duty rules. | Employer-defined workflow with appropriate confidentiality. |
DOT marijuana rules are federal rules
DOT-regulated testing is not controlled by state medical-marijuana permission. Marijuana remains prohibited for DOT-regulated employees, and a state medical-marijuana card does not provide a DOT drug-test exception.
Employers should keep DOT testing separate from non-DOT employer-policy testing. DOT tests, forms, MRO review, and return-to-duty requirements follow a regulated process.
Common DOT testing situations
DOT testing can occur in pre-employment, random, reasonable suspicion, post-accident, return-to-duty, and follow-up settings when the applicable federal rules require or permit it.
Employers should train supervisors, protect confidentiality, use proper chain-of-custody procedures, and avoid mixing DOT and non-DOT documentation.
- CDL driver testing
- Aviation and transit testing
- Pipeline, railroad, and maritime regulated work where applicable
- Return-to-duty and follow-up testing after a violation
Do not confuse DOT physicals with DOT drug testing
A DOT physical evaluates medical certification for commercial driving. DOT drug and alcohol testing is a separate compliance workflow. An employer may need both, but they answer different questions.
Castellan Health can help employers coordinate occupational-health services while keeping DOT physical and DOT testing workflows distinct.
Turn This Guidance Into a Repeatable Workflow
Set up drug testing, DOT workflows, injury documentation, and occupational-health services through one employer-focused partner.
Suggested Steps
- Identify the employee group or role.
- Review the written policy.
- Confirm DOT or non-DOT status.
- Document the relevant facts.
- Use the defined testing and MRO workflow.
- Have counsel review close employment decisions.
Employer Checklist
- DOT status confirmed
- DOT and non-DOT tests separated
- Supervisor training documented
- MRO process confirmed
- Return-to-duty process understood
Employer Takeaway
DOT Marijuana Rules should be handled as a documented employer workflow, not a one-off reaction. Castellan Health can support the occupational-health and testing process while employment counsel reviews policy and disciplinary decisions.
Sources to Verify Against Current Guidance
Use official sources for final policy review. Castellan Health provides occupational-health and testing information, not legal advice.